{"id":"CVE-2026-52834","sourceIdentifier":"security-advisories@github.com","published":"2026-08-19T15:17:09.810","lastModified":"2026-09-18T20:09:01.757","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"jxl-oxide is a pure Rust implementation of a JPEG XL decoder. Prior to jxl-grid 0.6.2, decoding a crafted JPEG XL image on a 32-bit platform can overflow length calculations in AlignedGrid::with_alloc_tracker and related grid and subgrid arithmetic. A 65536 x 65536 frame can pass the frame-area limit while overflowing the usize element count, causing modular, VarDCT, or filter rendering paths to allocate a backing buffer smaller than the logical grid. A tiny bitstream-controlled cropped frame combined with a huge canvas or requested region can also reach the vulnerable composition path in crates/jxl-render/src/blend.rs through ordinary render_frame(). Later mutable subgrid and raw-pointer operations can then perform attacker-controlled out-of-bounds writes, causing memory corruption, denial of service, or arbitrary code execution. This issue is fixed in jxl-grid version 0.6.2."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"tirr-c","product":"jxl-oxide","versions":[{"version":"< 0.12.6","status":"affected"}]},{"vendor":"tirr-c","product":"jxl-grid","versions":[{"version":"< 0.6.2","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H","baseScore":7.3,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":1.4,"impactScore":5.3}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-19T18:03:40.919161Z","id":"CVE-2026-52834","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-122"},{"lang":"en","value":"CWE-131"},{"lang":"en","value":"CWE-190"}]}],"references":[{"url":"https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2","source":"security-advisories@github.com"},{"url":"https://github.com/tirr-c/jxl-oxide/releases/tag/0.12.6","source":"security-advisories@github.com"},{"url":"https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-5pmv-rx8r-wmv5","source":"security-advisories@github.com"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0151.html","source":"security-advisories@github.com"}]}